Not exactly a twitter user , what is tweetdeck?
The only thing that made twitter useable. No ads. You put your lists of people into columns, so you only saw exactly what you wanted to see. No algos trying to shove “you may like” stuff down your throat.
I use it for work reasons but I’m not paying for it, I’ll deal without and start digging into what needs can be fulfilled with mastodon. I stopped using it the first time it broke for a week due to elon and I thought it was over then.
I’ve never used TweetDeck but there is the Control Panel for Twitter, which makes it usable. It can auto-block all the bluechecks with under a million followers, hide the “For You” tab, block ads, and restore the old Twitter branding.
Unfortunately the main reason I use Twitter is not the platform itself, but the public figures that are on it. Mastodon (mostly) doesn’t have that, though there is a trickle of some coming over.
